SPIGOT-824: SpongeAbsorbEvent

By: Articdive <articdive@gmail.com>

paper-server/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java

@@ -1,6 +1,7 @@
 package org.bukkit.craftbukkit.util;
 
 import java.util.ArrayList;
+import java.util.LinkedHashMap;
 import java.util.List;
 
 import net.minecraft.server.BlockPosition;
@@ -10,39 +11,35 @@ import net.minecraft.server.World;
 import org.bukkit.block.BlockState;
 import org.bukkit.craftbukkit.block.CraftBlockState;
 
-public class BlockStateListPopulator {
+public class BlockStateListPopulator extends DummyGeneratorAccess {
     private final World world;
-    private final List<CraftBlockState> list;
+    private final LinkedHashMap<BlockPosition, CraftBlockState> list;
 
     public BlockStateListPopulator(World world) {
-        this(world, new ArrayList<CraftBlockState>());
+        this(world, new LinkedHashMap<>());
     }
 
-    public BlockStateListPopulator(World world, List<CraftBlockState> list) {
+    public BlockStateListPopulator(World world, LinkedHashMap<BlockPosition, CraftBlockState> list) {
         this.world = world;
         this.list = list;
     }
 
-    public void setTypeUpdate(BlockPosition position, IBlockData data) {
-        CraftBlockState state = CraftBlockState.getBlockState(world, position);
-        state.setData(data);
-        list.add(state);
-    }
-
-    public void setTypeAndData(BlockPosition position, IBlockData data, int flag) {
+    @Override
+    public boolean setTypeAndData(BlockPosition position, IBlockData data, int flag) {
         CraftBlockState state = CraftBlockState.getBlockState(world, position, flag);
         state.setData(data);
-        list.add(state);
+        list.put(position, state);
+        return true;
     }
 
     public void updateList() {
-        for (BlockState state : list) {
+        for (BlockState state : list.values()) {
             state.update(true);
         }
     }
 
     public List<CraftBlockState> getList() {
-        return list;
+        return new ArrayList<>(list.values());
     }
 
     public World getWorld() {

paper-server/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java

@@ -39,7 +39,7 @@ public class DummyGeneratorAccess implements GeneratorAccess {
 
     public static final GeneratorAccess INSTANCE = new DummyGeneratorAccess();
 
-    private DummyGeneratorAccess() {
+    protected DummyGeneratorAccess() {
     }
 
     @Override